Help! Need help before Drywall goes up!

Discussion in 'Beginners, General Questions' started by ScottMalito, Nov 5, 2005.

  1. ScottMalito

    ScottMalito Auditioning

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    I am confused. If I have the Panasonic PT-AE900U projector 13 feet back, what size screen can I have? I used the calculator but it doesn't seem right compared to other projects like the Sanyo Z4.
    Also what does throw zoom mean?

    Thank you! Scott
     
  2. Massimo N

    Massimo N Stunt Coordinator

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    I quickly scanned through the manual, and the forumula to calculate the through distance is

    This formula is when using meters as the base unit of measure.

    Minimum Projector distance = LW=1.2244xSD-0.056
    Maximum Projector distance = LT=2.4449xSD-0.056

    LW (Wide)is not Zoomed
    LT (Telephoto) is not zoomed

    Use a conversion table like this one:

    feet to meters

    Since you are working backwords just re-arrange the forumula

    (LW+0.056)/1.2244=SD
    (LT+0.056)/2.4449=SD

    Max Screen Size = (3.96meters+0.056)/1.2244 = 3.2799 meters = 129.129"
    Min Screen Size = 1.6426meters = 64"

    So at 13' you can project an image anywhere from 64" to 129.129". To make sure, I would test just to make sure.

    Personally, I try to use as little zoom as possible.
     
  3. joseph westcott

    joseph westcott Second Unit

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    May I ask how you arrived at 13 feet?

    Is this a room limitation?
     

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